Zhejiang GangDu Electronic Co.,Ltd [China]

 Model:GD-VT2.1
Voltage: 12v DC  DC10-15V
Support: Support any GD coin acceptor and Bill Acceptor as long as it can output pulse signal
Apply to: vending machine.wash machine.game machine.shoe cleaning machine.TV.Massage chair.petrol filling station .automatic battery recharge.PC.etc.
Function: timing control.time delay.voltage detect.time add (cumulation ) function such as 1+2+5=8 ,pulse trigger time board.
Time range: LED show 1-999 minutes.1-999 seconds,
Voltage detect: LED show 0-99.9V  or 0-9.99V
The mode display: P-1 should be selected in common.
P-1 Timing relay mode
P-2 Time delay relay mode
P-3 Voltage control relay mode
P-4 Voltage & time control relay mode

Set Time
1. short press SET into P-1[timing control mode],
2.press ENTER,LED shows 000.
(T1=000,Operating time,T2=000,Releasing time)
3.short press SET.000.0 twinkles.into T1.
Press ENTER to program operation time 1-999 sec or
Minutes.decimal point twinkle=minutes.without it=second
4.short press SET 4 times into T2.ENTER to set.
5.short press SET to set circulation times.
6.short press SET to exit set status.and into operation.

Relay parameters for engineer reference:
Coil input : DC 12V/5V
conversion :(normally open normally closed)
Contact load: 10A/277VAC
Contact resistance: ≤ 100mΩ (1A 6VDC)
Mechanical durability: 10 million electricity
Durability:> 100,000 (10A-250VAC)
Operating Temperature: -40 ~ 85 Celsius degree
Under Time relay mode.can set the rely
respectively to control Relay operating time or
release time 
can loop execution or single execution